Caterpillar 3508, 3512 and 3516 Engine Updates - Engine Builder Magazine

Caterpillar 3508, 3512 and 3516 Engine Updates

This series of engines fall into various models that each include their own updates, those models are:

 

3500A / 3500B / 3500C

 

 

One of the most significant changes in the diesel applications was in the method of fuel delivery

systems from:

 

Mechanical Unit Injection (MUI)   To    Electronic Unit Injection (EUI)

 

 

There have also been major changes in the stroke and of course the piston design:

 

Aluminum  –   Two-piece Articulated   –  One-Piece Steel

 

 

In addition, you must consider changes within other components including:

 

  •  Electronics
  •  Gear train
  •  Valve, side and cam covers
  •  Water pumps
  •  Valve & injector lifters
  •  Cylinder liners & spacer plates
  •  Turbochargers
  •  Numerous seals & gaskets
  •  Crankshafts
  •  Camshafts
  •  Manifolds
  •  Numerous valve train components
  •  Cylinder Heads

Making sure the components are compatible when making repairs can be critical. Something as simple as mismatched valve springs can result in catastrophic failures.

The OE manufacturer has had several product improvements and support programs, as well as technical bulletins over the years, for example:

  •  Combustion leakage on cylinder head gaskets (REBE4209)
  •  Machining errors on cylinder liners (SEBE7666)
  •  Blockages in coolant passages of cylinder heads (TIBU2995) 
  •  Delaminating of some connecting rod bearings (TIBU5789)

Keeping parts and service information current and dealing with knowledgeable and reputable suppliers is important to your success when working with 3500 and other series engines. 

   

Note: These updates, issues mentioned above are for reference only to illustrate the many changes these engines have undergone in their 20-plus-year life span so far. The intent of this bulletin is solely to inform the engine builders of things to consider when ordering, quoting, and/or repairing 3500 series engines. Please contact your OE dealer to gain  access to the various bulletins and updates you will need to repair these engines.   

–Tech Tip courtesy of IPD  

You May Also Like

Shop Solutions – January 2024

Before installing cam bearings, make sure to chamfer any oil holes and clean up back grooves of any sharp edges.

Engine Builder and Engine Pro present Shop Solutions in each issue of Engine Builder Magazine and at enginebuildermag.com to provide machine shop owners and engine technicians the opportunity to share their knowledge to benefit the entire industry and their own shops. Those who submit Shop Solutions that are published are awarded a prepaid $100 Visa gift card. Submit your Shop Solution at [email protected]. You must include your name, shop name, shop address and shop telephone number. Submitted Shop Solutions not published will be kept on file and reevaluated for each month’s new entries.

Shop Solutions December 2023

Check out the latest shop solutions from builders around the country.

The Impact of Fuel Type on Engine Performance

When it comes to choosing the right fuel for your vehicle, several factors should be taken into consideration. These factors include the vehicle’s engine design, manufacturer recommendations, intended usage, and personal preferences.

Component Cleanliness

It can’t be overstated how important the cleaning machines are in the modern engine shop. Shop owners who prioritize effective and efficient cleaning techniques will find success in a more streamlined process.

Billet Blocks and Heads vs. Cast Iron

Billet aluminum has a lower yield strength or higher modulus of elasticity, meaning it will flex, or absorb energy easier under tension or stress than cast aluminum, without incurring permanent damage.

Other Posts

Shop Solutions November 2023

Many times, the flange diameter of the rod nuts will contact the radius around the nut seat on some rods. Some jobs may not warrant the expense of spot facing the nut seat on the connecting rods. In that case, it can be quicker and more effective to just machine a chamfer on the ARP rod nuts.

The CNC Landscape Continues to Grow Inside Engine Shops

Several manufacturers named automation as one of the biggest continuing trends surrounding CNC equipment these days, and it’s clearly a key contributor to a CNC machine’s ability to do more without human interference.

Crankshaft Counterweights

Most engines are internally balanced, meaning all weight adjustment is done on the crankshaft counterweights. However, some stock and modified engines require external balancing due to an increased stroke or larger pistons, and the crankshaft counterweights that would be required to offset the increased inertia simply don’t fit inside the crankcase.

Shop Solutions – October 2023

A written warranty provides benefits for you and your customer. It sets expectations, protects both parties and is a great marketing tool that encourages repeat business.